Let the hive mind of Engadget get that for you.
"As someone who doesn't reside in the USA, I was wondering what would be the best way to get internet for my computer in the US for a couple of weeks? If it were Europe I know I'd look for some prepaid data. Is there anything similar offered by American carriers? A MiFi or a data SIM that I can tether from would work, but I'm trying to maintain a tight budget. Help!"
Would be interesting to have an actual user survey. Getting scared seeing dust on the E300 in this test, I right away tested my two E300s. No dust whatsoever. It might be, living in Florida at nearly 100% humidity keeps the dust in the air at nearly zero, I guess.